Z790-e gaming wifi can't run 7600mhz ddr5 ram at xmp speeds

[Nate152]

I don't think it's fair to blame the motherboard when the memory controller is on the cpu. All cpu's are not created equal, and it seems your cpu's memory controller is on the weaker side.

One thing you haven't done is listed your cpu, are you using a 12th gen or 13th gen cpu? The i9-13900k will have the strongest memory controller and give you the best chance at hitting 7600MHz.

X.M.P. sets your memory kit at 1.40v and since it's not stable, you may need to enable High Dram Voltage mode in the bios and try VDD and VDDQ at 1.45v - 1.50v. Disabled, you can apply VDD and VDDQ a maximum of 1.435v.

At least this is how it is on my ROG Strix Z690-F Gaming Wifi.

[Xmptroubles]

Thanks for your reply. I think it's absolutely the mobo's fault. I'll prove it when I swap out with a different non-Asus board. I'm using a 13900k of course. If there's a way to test the cpu imc specifically I'd like to know.

I set the bios to manual ram oc, set it to 6600 32 41 41 108 with dram vdd/vddq at 1.4v, and it seems to be passing tm5 extreme and absolut cycles. Bump it up to 6800 and even with 1.35 to the sa or undervolting the sa to 1.15-1.2, it gets errors in tm5 eventually. 6600 seems like the limit here.

Bumping dram vdd/vddq from 1.4 to 1.43 doesn't help. Pushing 1.5v to reach 6800 is absurd. You push 1.5v to hit 8000 on an apex board.

[Nate152]

G.Skill has always been my go to memory but I see no 16GB TridentZ5 DDR5 kits which is what I wanted as no games to my knowledge are recommending 32GB, plus as you stated earlier in your thread, 16GB will have a much better chance to hit those higher speeds as less capacity = less strain on the cpu's memory controller. This is why I went with the fastest 16GB Kingston Fury Beast ram which at the time was 6000MT/s 40-40-40-80-2N.

Thank you for confirming your cpu, you have the best so....

No errors at 6600MHz with 32-41-41-108 timings is actually pretty good.

I'm not sure of your memory kit's timings but, what I would try next is setting the primary timings manually to 41-41-41-108-2N with the same voltages and see how high the frequency lets you go.

If you've set X.M.P. then changed the timings, reset to defaults (in the bios F5 key) then set the AI Tweaker to Manual and set your ram manually (primary timings and voltages), this could give better results.

Should be able to run 100:100 in Gear Mode 2, 100:133 may get you a higher frequency at the cost of some performance.

[Xmptroubles]

Either I return the ram for a cheaper 6600 kit, or return the mobo for a more expensive one that can really do 7600+. It's not really worth the performance increase, but I'm annoyed at Asus for the false marketing.

It's set to manual, xmr is off. I've tried 40 40 40 108 and ramping up the frequency. It really doesn't like going past 6800. 6800 isn't fully stable in tm5 either. I'll look into the gear and ratio thing thanks.

[Bukov.]

Ugh. At this point I consider myself lucky that my xmp6200 seems to be working. Also that my 4090 has not melted, but that's unrelated...

Meanwhile I'm wondering what the "i" in "A.I.O.C." stands for. Seems like it's Incompetence for the moment?

Of course I suppose Early Adopters must also be Early Adapters. So there is that. Respect does seem to be costly proposal these days...luckily I've been saving some patience for a rainy day.